1600 



J500 



1400 



1300 



1200 



It 00 



181 Ferguson and Merwin — The Ternary System. 



Fig. 4. 



<x CaO • SiO, Solid Sol'n + Melt 



aC«0 Si0 2 Solid Sol'n + 2 CaO MojO 2 Si0 2 

 <CaQ SiQ, Solid Soln + p CaO SiQ z Solid Sol'n 



CaO Si0 2 Schot Sol'n 



^C*0-SiO ? Solid Sol'n 

 2CaOMojO-2SiO E 



■\ 1 1 1 1 1 H 1 \- 



1600 



1400 



1300 



1200 



1100 



C«0 Si0 2 2CaO-MaO-2SiO, 



Fig. 4. The binary system CaO.Si0 2 — 2CaO.Mg0.2Si0 2 . 







Fig. 5. 



1600 



_ 







aCc 



.0 S.0 2 + Melt 



1500 



^ 



^^ Melt 



1400 



■« 



1 



| ex CaO Si0 2 



i 



1300 



*> 



<3 



of and @ CaO SiO^ 









1200 



* 

 £ 



i @CaOSi0 2 



1100 



1 !— 1 1 



CaO SiO„ 



10 20 



30 



To CaO MqO 2 SiO, 



Fig. 5. The phase relations along that portion of the CaO.Si0 2 — CaO. 

 Mg0.2Si0 2 line which includes the wollastonite-diopside solid solutions. 



